What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

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tcl.com

https://tcl.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

tcl.com

Sponsored

Hosting Provider

NTDKL

IP Address

103.29.141.105

Server Location

🇭🇰 North Point, Hong Kong

ASN

AS63981

Server

Apache

CDN

CloudFront

Nameservers

ns3.dnsv5.com.ns4.dnsv5.com.

Performance

Page Speed

9 KB

45 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Adobe Experience Manager

Technology Stack

6 Technologies Detected

Analytics

Libraries

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

B78/100

tcl.comtcl.com

TV-Mobile-Home Appliances-Smart Wearables-TCL Finland

Discover TCL's innovative technologies: from MiniLED, 8K QLED 4K UHD TV with Android TV to smart soundbars that create room-filling, clear sound experiences ...

Description truncated.

Title Length53 chars

Recommended: 50-60 chars

Description Length177 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Crawlability

Sitemap

Type: standard

89 URLs

robots.txt

206 rules

Sitemap reference found

Sponsored

Security Score

51%Poor

Interactive

HTTPS

No WAF

39d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

24.02.2025

Valid Until

27.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.tcl.comtcl.com

SHA-256 Fingerprint

E5:75:43:CC:4E:B4:A7:90:38:76:CB:3E:57:81:5E:98:DF:12:A1:BC...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-headers

X-Requested-With,Content-Type,Accept-Language

access-control-allow-methods

POST,PUT,GET,OPTIONS,DELETE

access-control-allow-origin

age

24623

alt-svc

h3=":443"; ma=86400

cache-control

🔵 1 Days(max-age=86400)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (4)

tcl-com.corpsmtp.cn

mdn.corpemail.net

mdn.corp-email.cn

tcl-com.corpsmtp.net

Domain Information

tcl.com

Domain Age

27y 2m

Created

04.12.1998

Expires

03.12.2027

Last Updated

09.10.2024

Registrar

Xiamen 35.com Information Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

TCLSans-Unity-Medium + sans-serif

58/100

Readability

/30

17/40

14px · LH 1.14

Hierarchy

/20

20/25

1.71x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

TCLSans-Unity-Medium

Sans24px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

~46 CPL

Optimal (45–75)

24px

16px

40px

16px

14px

Minor Third

Scale

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

⚠️ Tight line spacing (1.14). Consider 1.4-1.6 for better readability.

✅ Good hierarchy: Clear distinction between headlines and body text.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Optimal line length: ~46 characters per line is comfortable to read.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static-obg.tcl.com(8)googletagmanager.com(3)youtube.com(2)local(1)

Website Identity

Facebook Instagram YouTube

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Last analyzed: 16 Feb 2026 at 13:48

Historical Analysis & Change Tracking